CN112213634B - Method and device for detecting running state of circuit breaker - Google Patents
Method and device for detecting running state of circuit breaker Download PDFInfo
- Publication number
- CN112213634B CN112213634B CN202011155494.2A CN202011155494A CN112213634B CN 112213634 B CN112213634 B CN 112213634B CN 202011155494 A CN202011155494 A CN 202011155494A CN 112213634 B CN112213634 B CN 112213634B
- Authority
- CN
- China
- Prior art keywords
- value
- circuit breaker
- grading
- state parameter
- operation state
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/327—Testing of circuit interrupters, switches or circuit-breakers
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01D—MEASURING NOT SPECIALLY ADAPTED FOR A SPECIFIC VARIABLE; ARRANGEMENTS FOR MEASURING TWO OR MORE VARIABLES NOT COVERED IN A SINGLE OTHER SUBCLASS; TARIFF METERING APPARATUS; MEASURING OR TESTING NOT OTHERWISE PROVIDED FOR
- G01D21/00—Measuring or testing not otherwise provided for
- G01D21/02—Measuring two or more variables by means not covered by a single other subclass
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Breakers (AREA)
Abstract
The invention provides a method and a device for detecting the running state of a circuit breaker, wherein the method for detecting the running state of the circuit breaker comprises the following steps: collecting an operating state parameter value of the circuit breaker in operation, wherein the operating state parameter value comprises: temperature, load end current, distortion content, untreated alarms and switching times; classifying the collected operation state parameter values according to a preset operation state parameter value classifying strategy to obtain operation state parameter classifying values; acquiring a health value of the circuit breaker according to the acquired operation state parameter grading values corresponding to the operation state parameter values; and determining the running state of the circuit breaker according to the acquired health value. The operational reliability of the circuit including the circuit breaker can be improved.
Description
Technical Field
The invention relates to the technical field of electric appliance detection, in particular to a method and a device for detecting the running state of a circuit breaker.
Background
The circuit breaker is a switching device capable of closing, bearing and breaking current, can realize automatic voltage loss, undervoltage, overload and short-circuit protection, is widely applied to power control and feed-out loop protection of electric equipment, and is used for rapidly breaking fault current when overload and short-circuit faults occur in a circuit, so that the electric equipment is effectively protected, and therefore, the stability and reliability of the circuit breaker performance have important significance for safe operation of the electric equipment.
However, in operation, as the operation time and the number of times of disconnection are accumulated, the stability and the reliability are reduced, the service life is shortened, the electrical performance is deteriorated, the potential safety hazard is increased, and at present, a regular maintenance mode or an after-the-fact maintenance overhaul mode is generally adopted to maintain the circuit breaker after the circuit breaker breaks down. However, the circuit breaker is overhauled through regular maintenance or post-maintenance, and when the circuit breaker fails, the circuit breaker cannot be timely processed by faults, so that the circuit safety operation of electric equipment is affected, the timeliness and the safety of overhauling the circuit breaker are poor, and the reliability of the circuit operation comprising the circuit breaker is low.
Disclosure of Invention
In view of the above, an object of the present invention is to provide a method and apparatus for detecting the operation status of a circuit breaker, so as to improve the operation reliability of the circuit including the circuit breaker.
In a first aspect, an embodiment of the present invention provides a method for detecting an operating state of a circuit breaker, including:
collecting an operating state parameter value of the circuit breaker in operation, wherein the operating state parameter value comprises: temperature, load end current, distortion content, untreated alarms and switching times;
classifying the collected operation state parameter values according to a preset operation state parameter value classifying strategy to obtain operation state parameter classifying values;
acquiring a health value of the circuit breaker according to the acquired operation state parameter grading values corresponding to the operation state parameter values;
and determining the running state of the circuit breaker according to the acquired health value.
With reference to the first aspect, the embodiment of the present invention provides a first possible implementation manner of the first aspect, where the operation state parameter value includes a distortion content, and the collecting the operation state parameter value of the circuit breaker in operation includes:
carrying out Fourier transform on the load end current to obtain harmonic content and fundamental wave content;
and obtaining the distortion content based on the harmonic content and the fundamental wave content.
With reference to the first aspect, an embodiment of the present invention provides a second possible implementation manner of the first aspect, where the classifying, according to a preset operation state parameter value classification policy, the collected operation state parameter value to obtain an operation state parameter classification value includes:
obtaining a temperature grading value of the acquired temperature mapping according to a preset mapping relation between the temperature and the temperature grading;
obtaining a current classification value of the collected current mapping of the load end according to a preset mapping relation between the current and the current classification;
obtaining a harmonic grading value of the acquired distortion content map according to a preset mapping relation between the distortion content and the harmonic grading;
obtaining an alarm grading value of the acquired unprocessed alarm mapping according to a preset mapping relation between the alarm number and the alarm grading;
and obtaining an acquired switching-on/off grading value mapped by the switching-on/off times according to a preset mapping relation between the switching-on/off times and the switching-on/off grading.
With reference to the first aspect, an embodiment of the present invention provides a third possible implementation manner of the first aspect, where the determining, according to the obtained health value, an operating state of the circuit breaker includes:
if the obtained health value is greater than or equal to a first health threshold, determining that the running state of the circuit breaker is healthy;
if the obtained health degree value is larger than or equal to the health degree second threshold value and smaller than the health degree first threshold value, determining that the running state of the circuit breaker is good;
and if the acquired health value is smaller than a second health threshold, determining that the running state of the circuit breaker is unqualified.
With reference to the first aspect, the first possible implementation manner of the first aspect, and any one of the first possible implementation manner to the third possible implementation manner of the first aspect, the embodiment of the present invention provides a fourth possible implementation manner of the first aspect, where the method further includes:
and displaying the obtained operating state parameter grading value and the determined operating state of the circuit breaker by using a radar chart.
With reference to the fourth possible implementation manner of the first aspect, an embodiment of the present invention provides a fifth possible implementation manner of the first aspect, where the method further includes:
extracting an operation state parameter classification value lower than a classification threshold value from the obtained operation state parameter classification value to obtain a candidate classification value;
inquiring a mapping relation between a preset running state parameter grading value and a maintenance strategy to obtain a candidate grading value mapping maintenance strategy;
and integrating the acquired maintenance strategy to obtain the operation guidance strategy of the circuit breaker and displaying the operation guidance strategy on the radar chart.
With reference to the fifth possible implementation manner of the first aspect, the embodiment of the present invention provides a sixth possible implementation manner of the first aspect, where the method further includes:
pushing the radar chart with the operation guidance strategy to a preset maintainer so that the maintainer can overhaul the circuit breaker by referring to the operation guidance strategy.
In a second aspect, an embodiment of the present invention further provides an apparatus for detecting an operating state of a circuit breaker, including:
the parameter value acquisition module is used for acquiring the operation state parameter values of the circuit breaker in operation, and the operation state parameter values comprise: temperature, load end current, distortion content, untreated alarms and switching times;
the grading module is used for grading the collected operation state parameter values according to a preset operation state parameter value grading strategy to obtain operation state parameter grading values;
the health degree value acquisition module is used for acquiring the health degree value of the circuit breaker according to the acquired operation state parameter grading values corresponding to the operation state parameter values;
and the running state detection module is used for determining the running state of the circuit breaker according to the acquired health value.
In a third aspect, embodiments of the present application provide a computer device including a memory, a processor, and a computer program stored on the memory and executable on the processor, the processor implementing the steps of the above method when executing the computer program.
In a fourth aspect, embodiments of the present application provide a computer-readable storage medium having stored thereon a computer program which, when executed by a processor, performs the steps of the method described above.
The method and the device for detecting the running state of the circuit breaker provided by the embodiment of the invention are characterized in that the running state parameter values of the circuit breaker in running are collected, and the running state parameter values comprise the following components: temperature, load end current, distortion content, untreated alarms and switching times; classifying the collected operation state parameter values according to a preset operation state parameter value classifying strategy to obtain operation state parameter classifying values; acquiring a health value of the circuit breaker according to the acquired operation state parameter grading values corresponding to the operation state parameter values; and determining the running state of the circuit breaker according to the acquired health value. Thus, the related operation information of the circuit breaker is obtained from five dimensions, and the operation state of the circuit breaker is analyzed based on the related operation information of the five dimensions, so that the operation state of the circuit breaker can be obtained in real time, and the operation reliability of a circuit comprising the circuit breaker is effectively improved.
In order to make the above objects, features and advantages of the present invention more comprehensible, preferred embodiments accompanied with figures are described in detail below.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings that are needed in the embodiments will be briefly described below, it being understood that the following drawings only illustrate some embodiments of the present invention and therefore should not be considered as limiting the scope, and other related drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
Fig. 1 is a schematic flow chart of a method for detecting an operation state of a circuit breaker according to an embodiment of the present invention;
FIG. 2 shows a radar pictorial intent exhibited by an embodiment of the present invention;
fig. 3 is a schematic structural diagram of an apparatus for detecting an operation state of a circuit breaker according to an embodiment of the present invention;
fig. 4 is a schematic structural diagram of a computer device 400 according to an embodiment of the present application.
Detailed Description
For the purpose of making the objects, technical solutions and advantages of the embodiments of the present invention more apparent, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is apparent that the described embodiments are only some embodiments of the present invention, not all embodiments. The components of the embodiments of the present invention generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations. Thus, the following detailed description of the embodiments of the invention, as presented in the figures, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. All other embodiments, which can be made by a person skilled in the art without making any inventive effort, are intended to be within the scope of the present invention.
The circuit breaker is overhauled through regular maintenance or post-maintenance, and when the circuit breaker fails, the circuit breaker cannot be timely processed by faults, so that the safe operation of an electric equipment circuit comprising the circuit breaker is influenced, and the reliability of the circuit operation is lower. According to the embodiment of the invention, the related operation information of the circuit breaker is obtained from five dimensions, the operation state of the circuit breaker is analyzed based on the related operation information of the five dimensions, so that the operation state (health degree) of the circuit breaker can be obtained in real time, and corresponding measures are taken based on different operation states of the circuit breaker to ensure safe and stable operation of the circuit breaker, so that the operation reliability of a circuit comprising the circuit breaker is effectively improved.
The embodiment of the invention provides a method and a device for detecting the running state of a circuit breaker, and the method and the device are described below through the embodiment.
Fig. 1 shows a flowchart of a method for detecting an operation state of a circuit breaker according to an embodiment of the present invention. As shown in fig. 1, the method includes:
in an embodiment of the present invention, as an optional embodiment, the operation state parameter value includes a temperature, and the collecting the operation state parameter value of the circuit breaker in operation includes:
the temperature sensor is arranged on the current carrying conductor of the circuit breaker to sense the temperature of the current carrying conductor.
In the embodiment of the invention, as the current-carrying conductor in the circuit breaker is a transmission medium of current, as an alternative embodiment, the temperature of the current-carrying conductor in the circuit breaker can represent the temperature of the circuit breaker.
In an embodiment of the present invention, as an alternative embodiment, the current carrying conductor includes, but is not limited to: a lead-in terminal conductor and a lead-out terminal conductor.
In an embodiment of the present invention, as an optional embodiment, the operation state parameter value includes a load end current, and the collecting the operation state parameter value of the circuit breaker in operation includes:
and obtaining an induction current obtained by the current transformer inducting and outputting the current to a load end loop, wherein the current sensor is arranged in the load end loop of the circuit breaker.
In the embodiment of the invention, a current transformer is arranged in the circuit breaker, loop current passes through the current transformer, and induced current is induced on the secondary side of the current transformer. As an alternative embodiment, a metering chip can be further arranged in the circuit breaker, the induced current induced by the current transformer flows into the metering chip, a singlechip arranged in the circuit breaker reads the effective value of the induced current in the metering chip and calculates the actual current value, the actual current value is stored in the memory of the circuit breaker, and the load end current can be obtained by reading the current value in the memory of the circuit breaker.
In an embodiment of the present invention, as an optional embodiment, the operation state parameter value includes a distortion content, and the collecting the operation state parameter value of the circuit breaker in operation includes:
carrying out Fourier transform on the load end current to obtain harmonic content and fundamental wave content;
and obtaining the distortion content based on the harmonic content and the fundamental wave content.
In an embodiment of the present invention, as an alternative embodiment, the distortion content (THD, total Harmonic Distortion) is calculated using the following formula:
in the method, in the process of the invention,
THD is the distortion content;
In an embodiment of the present invention, as an optional embodiment, the operation state parameter value includes an unprocessed alarm, and the collecting the operation state parameter value of the circuit breaker in operation includes:
and reading the alarm information stored from the end of the last acquisition period to the current time from the memory of the circuit breaker to obtain an unprocessed alarm.
In the embodiment of the invention, the circuit breaker has a fault self-checking function, the alarm information obtained by fault self-checking is stored in the internal memory of the circuit breaker, and the alarm which is not processed in the current acquisition period can be obtained by reading the alarm information stored from the end of the previous acquisition period to the current acquisition period.
In an embodiment of the present invention, as an optional embodiment, the operation state parameter value includes a number of times of opening and closing, and the collecting the operation state parameter value of the circuit breaker in operation includes:
the recorded opening and closing times are read from an electrically charged erasable programmable read-Only Memory (EEPROM, electrically Erasable Programmable Read-Only Memory) of the circuit breaker.
In the embodiment of the invention, the breaker has the function of automatically calculating the opening and closing times, and the calculated opening and closing times are stored in the EEPROM.
in the embodiment of the present invention, as an optional embodiment, for each type of operation state parameter value, there is a classification policy of operation state parameter values, and the classification levels corresponding to the various types of operation state parameter values may be the same or different. In the embodiment of the invention, the classification strategy is set as a three-level classification strategy, namely, the operation state parameter values of each type can be divided into three levels.
In the embodiment of the present invention, as an optional embodiment, the classifying the collected operation state parameter values according to a preset operation state parameter value classifying strategy to obtain operation state parameter classifying values includes:
obtaining a temperature grading value of the acquired temperature mapping according to a preset mapping relation between the temperature and the temperature grading;
obtaining a current classification value of the collected current mapping of the load end according to a preset mapping relation between the current and the current classification;
obtaining a harmonic grading value of the acquired distortion content map according to a preset mapping relation between the distortion content and the harmonic grading;
obtaining an alarm grading value of the acquired unprocessed alarm mapping according to a preset mapping relation between the alarm number and the alarm grading;
and obtaining an acquired switching-on/off grading value mapped by the switching-on/off times according to a preset mapping relation between the switching-on/off times and the switching-on/off grading.
In the embodiment of the present invention, as an optional embodiment, the mapping relationship between the temperature and the temperature classification is as follows:
if the temperature is smaller than the first threshold value of the over-temperature alarm, the mapped temperature grading value is the first grading value;
if the temperature is greater than or equal to the first threshold value of the over-temperature alarm and less than or equal to the second threshold value of the over-temperature alarm, the mapped temperature classification value is a second classification value;
and if the temperature is greater than the over-temperature alarm second threshold, the mapped temperature grading value is a third grading value.
In the embodiment of the invention, the first threshold value of the over-temperature alarm and the second threshold value of the over-temperature alarm are set according to the actual requirement of the over-temperature alarm of the circuit breaker. As an alternative embodiment, the first threshold of the over-temperature alarm is 70 degrees celsius, and the second threshold of the over-temperature alarm is 100 degrees celsius. As an alternative embodiment, the first classification value is greater than the second classification value, and the second classification value is greater than the third classification value.
The current-to-current classification mapping is as follows:
if the current is smaller than the current overload first threshold, the mapped current classification value is the first classification value;
if the current is greater than or equal to the first current overload threshold and less than or equal to the second current overload threshold, the mapped current classification value is the second classification value;
and if the current is greater than the current overload second threshold, the mapped current classification value is a third classification value.
In the embodiment of the invention, the first current overload threshold and the second current overload threshold are based on the rated current (I) of the load end externally connected with the circuit breaker n ) Setting is performed. As an alternative embodiment, the first threshold for current overload is 0.5I n The second threshold value of current overload is 1I n 。
The mapping relation between the distortion content and the harmonic classification is as follows:
if the distortion content is smaller than the first threshold value of the total harmonic distortion, the mapped harmonic classification value is the first classification value;
if the distortion content is greater than or equal to the first threshold value of the total harmonic distortion and less than or equal to the second threshold value of the total harmonic distortion, the mapped harmonic classification value is a second classification value;
and if the distortion content is greater than the second threshold of the total harmonic distortion, the mapped harmonic classification value is a third classification value.
In the embodiment of the present invention, as an alternative embodiment, the first threshold of total harmonic distortion is 30%, and the second threshold of total harmonic distortion is 50%.
The mapping relation between the alarm number and the alarm classification is as follows:
if the unprocessed alarm number is smaller than the first threshold value of the alarm number, the mapped alarm classification value is the first classification value;
if the untreated alarm number is greater than or equal to the first alarm number threshold value and less than or equal to the second alarm number threshold value, the mapped alarm classification value is a second classification value;
and if the unprocessed alarm number is larger than the second threshold value of the alarm number, the mapped alarm classification value is a third classification value.
In the embodiment of the present invention, as an optional embodiment, the first threshold of the alarm number is 0, and the second threshold of the alarm number is 1.
The mapping relation between the opening and closing times and the opening and closing grading is as follows:
if the ratio of the opening and closing times to the total opening and closing times allowed by the circuit breaker is smaller than a first opening and closing threshold value, the mapped opening and closing grading value is a first grading value;
if the ratio of the opening and closing times to the total opening and closing times allowed by the circuit breaker is larger than or equal to the opening and closing first threshold value and smaller than or equal to the opening and closing second threshold value, the mapped opening and closing grading value is a second grading value;
if the ratio of the opening and closing times to the total opening and closing times allowed by the circuit breaker is larger than the opening and closing second threshold value, the mapped opening and closing grading value is a third grading value.
In the embodiment of the present invention, as an optional embodiment, the first threshold of opening and closing is 70%, and the second threshold of opening and closing is 80%.
In the embodiment of the present invention, as an alternative embodiment, the first classification value is 3, the second classification value is 2, and the third classification value is 1.
in the embodiment of the invention, the service life of the circuit breaker is influenced by the temperature, load end current, distortion content, untreated alarm, switching-on and switching-off times and other operation state parameters of the circuit breaker. Wherein, the life-span of circuit breaker includes: the service life of a motor, the service life of a contact, the service life of a transformer, the service life of components on a circuit board and the like of the circuit breaker. The service life of the motor, the service life of the contact, the service life of the transformer and the service life of components comprehensively determine whether the circuit breaker can work normally. Thus, as an alternative embodiment, the weighted summation of the operating condition parameter classification values yields the health value of the circuit breaker.
In the embodiment of the present invention, as an optional embodiment, the health value of the circuit breaker is calculated using the following formula:
A H ＝A Temp +A Load +A HA +A BA +A UA
in the method, in the process of the invention,
A H the health value of the circuit breaker;
A Temp is a temperature classification value;
A Load is a current classification value;
A HA is a harmonic grading value;
A BA the alarm classification value is given;
A UA the switching value is a switching value.
In the embodiment of the invention, as an optional embodiment, statistical analysis can be performed according to the collected fault data of the circuit breaker, and corresponding weight coefficients are set for each operation state parameter according to the analysis result.
And 104, determining the running state of the circuit breaker according to the acquired health value.
In an embodiment of the present invention, as an optional embodiment, determining an operation state of the circuit breaker according to the obtained health value includes:
if the obtained health value is greater than or equal to a first health threshold, determining that the running state of the circuit breaker is healthy;
if the obtained health degree value is larger than or equal to the health degree second threshold value and smaller than the health degree first threshold value, determining that the running state of the circuit breaker is good;
and if the acquired health value is smaller than a second health threshold, determining that the running state of the circuit breaker is unqualified.
In the embodiment of the present invention, as an optional embodiment, the first threshold of health degree is 15, and the second threshold of health degree is 10. When the health is equal to 15, the operation state of the circuit breaker is indicated to be healthy, when the health is between 10 and 15, the operation state of the circuit breaker is indicated to be good, and when the health is less than 10, the operation state of the circuit breaker is indicated to be unqualified. In the embodiment of the invention, the greater the health degree is, the better the running state of the circuit breaker is. As another alternative embodiment, the first threshold of health degree may also be set to 14 or the like, which is not limited by the embodiment of the present invention.
In an embodiment of the present invention, as an optional embodiment, the method further includes:
and displaying the obtained operating state parameter grading value and the determined operating state of the circuit breaker by using a radar chart.
In the embodiment of the invention, the health degree and the grading value of each running state parameter are displayed in the form of a radar chart, so that the influence degree of each running state parameter on the health degree of the circuit breaker can be intuitively known, and the follow-up targeted improvement measures are convenient.
In an embodiment of the present invention, as another optional embodiment, the method further includes:
extracting an operation state parameter classification value lower than a classification threshold value from the obtained operation state parameter classification value to obtain a candidate classification value;
inquiring a mapping relation between a preset running state parameter grading value and a maintenance strategy to obtain a candidate grading value mapping maintenance strategy;
and integrating the acquired maintenance strategy to obtain the operation guidance strategy of the circuit breaker and displaying the operation guidance strategy on the radar chart.
In the embodiment of the invention, even if the operating state is a healthy or good circuit breaker, some operating state parameter classification values are low, so that potential safety hazards are brought to the operation of the circuit breaker, and therefore, the operating state parameter classification values lower than the classification threshold value are extracted from all operating state parameter classification values for the circuit breaker with the operating state being healthy or good or unqualified, and corresponding maintenance is carried out for the extracted operating state parameters.
In an embodiment of the present invention, as a further alternative embodiment, the method further includes:
pushing the radar chart with the operation guidance strategy to a preset maintainer so that the maintainer can overhaul the circuit breaker by referring to the operation guidance strategy.
In the embodiment of the invention, the operation state parameters which cause disqualification of the operation state of the circuit breaker are processed.
In the embodiment of the invention, the processing is respectively carried out aiming at unqualified caused by different running state parameters, and as an optional embodiment, the processing priority is as follows: the lower the running state parameter classification value, the higher the priority.
In an embodiment of the present invention, as an optional embodiment, the maintenance policy includes: a removable maintenance policy and a non-removable maintenance policy, wherein for the non-removable maintenance policy, the corresponding operation guidance policy is a replacement product. For example, in the case where the operating state of the circuit breaker is failed mainly due to the number of times of opening and closing, the circuit breaker needs to be replaced. For the removable maintenance strategy, the corresponding operation guiding strategy is a specific measure to ensure that the operating state of the circuit breaker is healthy or good after overhauling according to the measure, for example, the operating state of the circuit breaker mainly caused by over-temperature is disqualified, and the corresponding operation guiding strategy is a specific technical measure for reducing the temperature to be within a safety range.
Fig. 2 shows a radar pictorial representation presented by an embodiment of the invention. As shown in fig. 2, the breaker has good health, the corresponding temperature classification value is 3, the current classification value is 1, the harmonic classification value is 3, the alarm classification value is 2, the opening and closing classification value is 2, and the corresponding operation guidance strategy is given.
According to the method for detecting the operating state of the circuit breaker, the health state (operating state) of the circuit breaker is analyzed from five dimensions (temperature, load end current, distortion content, unprocessed alarms and switching-on and switching-off times), the operating state parameter value classification strategy is set, the influence factors of each dimension are classified, the health value of the circuit breaker is obtained based on the classified classification values, the operating state of the circuit breaker is determined, the health of the circuit breaker can be obtained in real time, and when the operating state of the circuit breaker is characterized as unqualified by the health of the circuit breaker, corresponding measures can be taken to ensure safe and stable operation of the circuit breaker, the timeliness and the safety of overhaul of the circuit breaker are improved, and the operating reliability of a circuit comprising the circuit breaker is improved.
Fig. 3 is a schematic structural diagram of an apparatus for detecting an operating state of a circuit breaker according to an embodiment of the present invention. As shown in fig. 3, the apparatus includes:
a parameter value acquisition module 301, configured to acquire an operation state parameter value of the circuit breaker in operation, where the operation state parameter value includes: temperature, load end current, distortion content, untreated alarms and switching times;
the grading module 302 is configured to grade the collected operation state parameter values according to a preset operation state parameter value grading strategy, so as to obtain operation state parameter grading values;
the health value obtaining module 303 is configured to obtain a health value of the circuit breaker according to the collected running state parameter classification values corresponding to the running state parameter values;
the operation state detection module 304 is configured to determine an operation state of the circuit breaker according to the obtained health value.
In the embodiment of the invention, as an optional embodiment, the weighted summation is performed on the grading values of all the running state parameters to obtain the health value of the circuit breaker.
In this embodiment of the present invention, as an optional embodiment, the operation state parameter value includes a temperature and parameter value acquisition module 301, which is specifically configured to:
the temperature sensor is arranged on the current carrying conductor of the circuit breaker to sense the temperature of the current carrying conductor.
In an embodiment of the present invention, as an alternative embodiment, the current carrying conductor includes, but is not limited to: a lead-in terminal conductor and a lead-out terminal conductor.
In this embodiment of the present invention, as an optional embodiment, the running state parameter value includes a load end current, and the parameter value acquisition module 301 is specifically configured to:
and obtaining an induction current obtained by the current transformer inducting and outputting the current to a load end loop, wherein the current sensor is arranged in the load end loop of the circuit breaker.
In this embodiment of the present invention, as an optional embodiment, the running state parameter value includes a distortion content, and the parameter value acquisition module 301 is specifically configured to:
carrying out Fourier transform on the load end current to obtain harmonic content and fundamental wave content;
and obtaining the distortion content based on the harmonic content and the fundamental wave content.
In an embodiment of the present invention, as an alternative embodiment, the distortion content is calculated using the following formula:
in this embodiment of the present invention, as an optional embodiment, the running state parameter value includes an unprocessed alarm, and the parameter value acquisition module 301 is specifically configured to:
and reading the alarm information stored from the end of the last acquisition period to the current time from the memory of the circuit breaker to obtain an unprocessed alarm.
In this embodiment of the present invention, as an optional embodiment, the running state parameter value includes a switching on/off number, and the parameter value acquisition module 301 is specifically configured to:
and reading the recorded opening and closing times from the electrified erasable programmable read-only memory of the circuit breaker.
In the embodiment of the present invention, as an optional embodiment, the grading module 302 is specifically configured to:
obtaining a temperature grading value of the acquired temperature mapping according to a preset mapping relation between the temperature and the temperature grading;
obtaining a current classification value of the collected current mapping of the load end according to a preset mapping relation between the current and the current classification;
obtaining a harmonic grading value of the acquired distortion content map according to a preset mapping relation between the distortion content and the harmonic grading;
obtaining an alarm grading value of the acquired unprocessed alarm mapping according to a preset mapping relation between the alarm number and the alarm grading;
and obtaining an acquired switching-on/off grading value mapped by the switching-on/off times according to a preset mapping relation between the switching-on/off times and the switching-on/off grading.
In the embodiment of the present invention, as an optional embodiment, the mapping relationship between the temperature and the temperature classification is as follows:
if the temperature is smaller than the first threshold value of the over-temperature alarm, the mapped temperature grading value is the first grading value;
if the temperature is greater than or equal to the first threshold value of the over-temperature alarm and less than or equal to the second threshold value of the over-temperature alarm, the mapped temperature classification value is a second classification value;
and if the temperature is greater than the over-temperature alarm second threshold, the mapped temperature grading value is a third grading value.
The mapping relation between the opening and closing times and the opening and closing grading is as follows:
if the ratio of the opening and closing times to the total opening and closing times allowed by the circuit breaker is smaller than a first opening and closing threshold value, the mapped opening and closing grading value is a first grading value;
if the ratio of the opening and closing times to the total opening and closing times allowed by the circuit breaker is larger than or equal to the opening and closing first threshold value and smaller than or equal to the opening and closing second threshold value, the mapped opening and closing grading value is a second grading value;
if the ratio of the opening and closing times to the total opening and closing times allowed by the circuit breaker is larger than the opening and closing second threshold value, the mapped opening and closing grading value is a third grading value.
In this embodiment of the present invention, as an optional embodiment, the running state detection module 304 is specifically configured to:
if the obtained health value is greater than or equal to a first health threshold, determining that the running state of the circuit breaker is healthy;
if the obtained health degree value is larger than or equal to the health degree second threshold value and smaller than the health degree first threshold value, determining that the running state of the circuit breaker is good;
and if the acquired health value is smaller than a second health threshold, determining that the running state of the circuit breaker is unqualified.
In an embodiment of the present invention, as an optional embodiment, the apparatus further includes:
an operation state display module (not shown in the figure) is used for displaying the obtained operation state parameter grading value and the determined operation state of the circuit breaker by using a radar chart.
In an embodiment of the present invention, as another optional embodiment, the apparatus further includes:
the operation guidance strategy display module is used for extracting the operation state parameter classification value lower than the classification threshold value from the obtained operation state parameter classification value to obtain a candidate classification value;
inquiring a mapping relation between a preset running state parameter grading value and a maintenance strategy to obtain a candidate grading value mapping maintenance strategy;
and integrating the acquired maintenance strategy to obtain the operation guidance strategy of the circuit breaker and displaying the operation guidance strategy on the radar chart.
In an embodiment of the present invention, as a further alternative embodiment, the apparatus further includes:
and the overhaul pushing module is used for pushing the radar chart with the operation guidance strategy to a preset overhaul worker so that the overhaul worker can overhaul the circuit breaker by referring to the operation guidance strategy.
In an embodiment of the present invention, as an optional embodiment, the maintenance policy includes: a removable maintenance policy and a non-removable maintenance policy, wherein for the non-removable maintenance policy, the corresponding operation guidance policy is a replacement product. Aiming at the removable maintenance strategy, the corresponding operation guidance strategy provides specific measures to ensure that the running state of the circuit breaker is healthy or good after overhauling according to the measures.
As shown in fig. 4, an embodiment of the present application provides a computer device 400 for executing the method for detecting the operating state of the circuit breaker in fig. 1, where the device includes a memory 401, a processor 402, and a computer program stored in the memory 401 and capable of running on the processor 402, where the steps of the method for detecting the operating state of the circuit breaker are implemented when the processor 402 executes the computer program.
Specifically, the memory 401 and the processor 402 can be general-purpose memories and processors, and are not particularly limited herein, and the above-described method of detecting the operating state of the circuit breaker can be performed when the processor 402 runs a computer program stored in the memory 401.
Corresponding to the method for detecting the operating state of the circuit breaker in fig. 1, the embodiment of the present application further provides a computer readable storage medium, on which a computer program is stored, which when being executed by a processor, performs the steps of the method for detecting the operating state of the circuit breaker.
In particular, the storage medium can be a general-purpose storage medium, such as a removable disk, a hard disk, etc., on which the computer program is executed, capable of executing the above-described method of detecting the operating state of the circuit breaker.
In the embodiments provided herein, it should be understood that the disclosed systems and methods may be implemented in other ways. The system embodiments described above are merely illustrative, e.g., the division of the elements is merely a logical functional division, and there may be additional divisions in actual implementation, and e.g., multiple elements or components may be combined or integrated into another system, or some features may be omitted, or not performed. Alternatively, the coupling or direct coupling or communication connection shown or discussed with each other may be through some communication interface, system or unit indirect coupling or communication connection, which may be in electrical, mechanical or other form.
The units described as separate units may or may not be physically separate, and units shown as units may or may not be physical units, may be located in one place, or may be distributed on a plurality of network units. Some or all of the units may be selected according to actual needs to achieve the purpose of the solution of this embodiment.
In addition, each functional unit in the embodiments provided in the present application may be integrated in one processing unit, or each unit may exist alone physically, or two or more units may be integrated in one unit.
The functions, if implemented in the form of software functional units and sold or used as a stand-alone product, may be stored in a computer-readable storage medium. Based on such understanding, the technical solution of the present application may be embodied essentially or in a part contributing to the prior art or in a part of the technical solution, in the form of a software product stored in a storage medium, including several instructions for causing a computer device (which may be a personal computer, a server, or a network device, etc.) to perform all or part of the steps of the methods described in the embodiments of the present application. And the aforementioned storage medium includes: a U-disk, a removable hard disk, a Read-Only Memory (ROM), a random access Memory (Random Access Memory, RAM), a magnetic disk, or an optical disk, or other various media capable of storing program codes.
It should be noted that: like reference numerals and letters in the following figures denote like items, and thus once an item is defined in one figure, no further definition or explanation of it is required in the following figures, and furthermore, the terms "first," "second," "third," etc. are used merely to distinguish one description from another and are not to be construed as indicating or implying relative importance.
Finally, it should be noted that: the foregoing examples are merely specific embodiments of the present application, and are not intended to limit the scope of the present application, but the present application is not limited thereto, and those skilled in the art will appreciate that while the foregoing examples are described in detail, the present application is not limited thereto. Any person skilled in the art may modify or easily conceive of the technical solution described in the foregoing embodiments, or make equivalent substitutions for some of the technical features within the technical scope of the disclosure of the present application; such modifications, changes or substitutions do not depart from the spirit and scope of the corresponding technical solutions. Are intended to be encompassed within the scope of this application. Therefore, the protection scope of the present application shall be subject to the protection scope of the claims.
Claims (9)
1. A method of detecting an operating condition of a circuit breaker, comprising:
collecting an operating state parameter value of the circuit breaker in operation, wherein the operating state parameter value comprises: temperature, load end current, distortion content, unprocessed warning and divide-shut brake number of times, gather the running state parameter value of circuit breaker in operation, include: reading the alarm information stored from the end of the last acquisition period to the current time from the memory of the circuit breaker to obtain an unprocessed alarm;
classifying the collected operation state parameter values according to a preset operation state parameter value classifying strategy to obtain operation state parameter classifying values;
acquiring a health value of the circuit breaker according to the acquired operation state parameter grading values corresponding to the operation state parameter values;
determining the running state of the circuit breaker according to the obtained health value;
the classifying the collected operation state parameter values according to a preset operation state parameter value classifying strategy to obtain operation state parameter classifying values, including:
obtaining a temperature grading value of the acquired temperature mapping according to a preset mapping relation between the temperature and the temperature grading;
obtaining a current classification value of the collected current mapping of the load end according to a preset mapping relation between the current and the current classification;
obtaining a harmonic grading value of the acquired distortion content map according to a preset mapping relation between the distortion content and the harmonic grading;
obtaining an alarm grading value of the acquired unprocessed alarm mapping according to a preset mapping relation between the alarm number and the alarm grading;
obtaining an acquired switching-on/off grading value mapped by the switching-on/off times according to a preset mapping relation between the switching-on/off times and switching-on/off grading;
the step of obtaining the health value of the circuit breaker according to the collected operation state parameter grading values corresponding to the operation state parameter values comprises the following steps:
the health value of the circuit breaker is calculated using the following:
in the method, in the process of the invention,
the health value of the circuit breaker; />
Is a temperature classification value; />
Is a current classification value; />
Is a harmonic grading value; />
The alarm classification value is given; />
The switching value is a switching value.
2. The method of claim 1, wherein the operating state parameter value comprises a distortion content, and wherein the collecting the operating state parameter value of the circuit breaker in operation comprises:
carrying out Fourier transform on the load end current to obtain harmonic content and fundamental wave content;
and obtaining the distortion content based on the harmonic content and the fundamental wave content.
3. The method of claim 1, wherein determining the operating state of the circuit breaker based on the obtained health value comprises:
if the obtained health value is greater than or equal to a first health threshold, determining that the running state of the circuit breaker is healthy;
if the obtained health degree value is larger than or equal to the health degree second threshold value and smaller than the health degree first threshold value, determining that the running state of the circuit breaker is good;
and if the acquired health value is smaller than a second health threshold, determining that the running state of the circuit breaker is unqualified.
4. A method according to any one of claims 1 to 3, further comprising:
and displaying the obtained operating state parameter grading value and the determined operating state of the circuit breaker by using a radar chart.
5. The method according to claim 4, wherein the method further comprises:
extracting an operation state parameter classification value lower than a classification threshold value from the obtained operation state parameter classification value to obtain a candidate classification value;
inquiring a mapping relation between a preset running state parameter grading value and a maintenance strategy to obtain a candidate grading value mapping maintenance strategy;
and integrating the acquired maintenance strategy to obtain the operation guidance strategy of the circuit breaker and displaying the operation guidance strategy on the radar chart.
6. The method of claim 5, wherein the method further comprises:
pushing the radar chart with the operation guidance strategy to a preset maintainer so that the maintainer can overhaul the circuit breaker by referring to the operation guidance strategy.
7. An apparatus for detecting an operating condition of a circuit breaker, comprising:
the parameter value acquisition module is used for acquiring the operation state parameter values of the circuit breaker in operation, and the operation state parameter values comprise: temperature, load end current, distortion content, unprocessed warning and divide-shut brake number of times, gather the running state parameter value of circuit breaker in operation, include: reading the alarm information stored from the end of the last acquisition period to the current time from the memory of the circuit breaker to obtain an unprocessed alarm;
the grading module is used for grading the collected operation state parameter values according to a preset operation state parameter value grading strategy to obtain operation state parameter grading values;
the health degree value acquisition module is used for acquiring the health degree value of the circuit breaker according to the acquired operation state parameter grading values corresponding to the operation state parameter values;
the running state detection module is used for determining the running state of the circuit breaker according to the acquired health value;
the grading module is specifically configured to:
obtaining a temperature grading value of the acquired temperature mapping according to a preset mapping relation between the temperature and the temperature grading;
obtaining a current classification value of the collected current mapping of the load end according to a preset mapping relation between the current and the current classification;
obtaining a harmonic grading value of the acquired distortion content map according to a preset mapping relation between the distortion content and the harmonic grading;
obtaining an alarm grading value of the acquired unprocessed alarm mapping according to a preset mapping relation between the alarm number and the alarm grading;
obtaining an acquired switching-on/off grading value mapped by the switching-on/off times according to a preset mapping relation between the switching-on/off times and switching-on/off grading;
the health value acquisition module is specifically configured to:
the health value of the circuit breaker is calculated using the following:
in the method, in the process of the invention,
the health value of the circuit breaker; />
Is a temperature classification value; />
Is a current classification value; />
Is a harmonic grading value; />
The alarm classification value is given; />
The switching value is a switching value.
8. A computer device, comprising: a processor, a memory and a bus, said memory storing machine readable instructions executable by said processor, said processor and said memory communicating over the bus when the computer device is running, said machine readable instructions when executed by said processor performing the steps of the method of detecting the operating condition of a circuit breaker as claimed in any one of claims 1 to 6.
9. A computer-readable storage medium, characterized in that it has stored thereon a computer program which, when executed by a processor, performs the steps of the method of detecting the operating state of a circuit breaker according to any of claims 1 to 6.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011155494.2A CN112213634B (en) | 2020-10-26 | 2020-10-26 | Method and device for detecting running state of circuit breaker |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011155494.2A CN112213634B (en) | 2020-10-26 | 2020-10-26 | Method and device for detecting running state of circuit breaker |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN112213634A CN112213634A (en) | 2021-01-12 |
| CN112213634B true CN112213634B (en) | 2023-05-09 |
Family
ID=74056511
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011155494.2A Active CN112213634B (en) | 2020-10-26 | 2020-10-26 | Method and device for detecting running state of circuit breaker |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN112213634B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117269679B (en) * | 2023-08-21 | 2024-08-06 | 国网江苏省电力有限公司南京供电分公司 | A method for judging the external insulation state of high-voltage circuit breaker based on the proportion of fundamental wave electric field |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0285782A (en) * | 1987-02-23 | 1990-03-27 | Takenaka Komuten Co Ltd | alarm device |
| JPH11111122A (en) * | 1997-10-03 | 1999-04-23 | Saginomiya Seisakusho Inc | Insulating gas condition monitoring device and insulating gas condition monitoring device control method |
| CN101924344A (en) * | 2010-08-20 | 2010-12-22 | 上海电科电器科技有限公司 | Multifunction control and protection switch device |
| JP2011222210A (en) * | 2010-04-07 | 2011-11-04 | Chugoku Electric Power Co Inc:The | Breaker |
| CN105467312A (en) * | 2015-12-31 | 2016-04-06 | 北京四方继保自动化股份有限公司 | A risk assessment method for the operation of gas-insulated metal-enclosed switchgear |
| CN105759201A (en) * | 2016-03-11 | 2016-07-13 | 江苏镇安电力设备有限公司 | High voltage circuit breaker self-diagnosis method based on abnormal sample identification |
| CN108304634A (en) * | 2018-01-23 | 2018-07-20 | 国网江西省电力有限公司电力科学研究院 | A kind of 10kV pvs (pole-mounted vacuum switch) method for evaluating state based on multi-source data |
| WO2019157622A1 (en) * | 2018-02-13 | 2019-08-22 | Abb Schweiz Ag | Wireless sensing system and method for switchgear |
Family Cites Families (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6466023B2 (en) * | 1998-12-28 | 2002-10-15 | General Electric Company | Method of determining contact wear in a trip unit |
| US8081001B2 (en) * | 2008-03-27 | 2011-12-20 | Siemens Industry, Inc. | Device, system and method for automatic self-test for a ground fault interrupter |
| US8760824B2 (en) * | 2011-03-04 | 2014-06-24 | Fairchild Semiconductor Corporation | Ground fault circuit interrupter (GFCI) monitor |
| CN102384768A (en) * | 2011-11-22 | 2012-03-21 | 广东电网公司电力科学研究院 | On-line measuring method of circuit breaker and device thereof |
| FR3019303B1 (en) * | 2014-04-01 | 2019-06-14 | Socomec | DEVICE FOR MEASURING AT LEAST ONE PHYSICAL SIZE OF AN ELECTRICAL INSTALLATION |
| KR20160143140A (en) * | 2015-06-04 | 2016-12-14 | 엘에스산전 주식회사 | System for assessing health index of power apparatus |
| CN105353256B (en) * | 2015-11-30 | 2018-05-25 | 上海交通大学 | A kind of power transmission and transformation equipment state method for detecting abnormality |
| EP3598256B1 (en) * | 2018-07-16 | 2023-11-29 | ABB Schweiz AG | Apparatus for prediction of the residual lifetime of an electrical system |
-
2020
- 2020-10-26 CN CN202011155494.2A patent/CN112213634B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0285782A (en) * | 1987-02-23 | 1990-03-27 | Takenaka Komuten Co Ltd | alarm device |
| JPH11111122A (en) * | 1997-10-03 | 1999-04-23 | Saginomiya Seisakusho Inc | Insulating gas condition monitoring device and insulating gas condition monitoring device control method |
| JP2011222210A (en) * | 2010-04-07 | 2011-11-04 | Chugoku Electric Power Co Inc:The | Breaker |
| CN101924344A (en) * | 2010-08-20 | 2010-12-22 | 上海电科电器科技有限公司 | Multifunction control and protection switch device |
| CN105467312A (en) * | 2015-12-31 | 2016-04-06 | 北京四方继保自动化股份有限公司 | A risk assessment method for the operation of gas-insulated metal-enclosed switchgear |
| CN105759201A (en) * | 2016-03-11 | 2016-07-13 | 江苏镇安电力设备有限公司 | High voltage circuit breaker self-diagnosis method based on abnormal sample identification |
| CN108304634A (en) * | 2018-01-23 | 2018-07-20 | 国网江西省电力有限公司电力科学研究院 | A kind of 10kV pvs (pole-mounted vacuum switch) method for evaluating state based on multi-source data |
| WO2019157622A1 (en) * | 2018-02-13 | 2019-08-22 | Abb Schweiz Ag | Wireless sensing system and method for switchgear |
Non-Patent Citations (2)
| Title |
|---|
| 周琴 等.基于DeviceNet智能断路器监控系统.《计算机系统应用》.2011,第20卷(第9期),144-148. * |
| 陈再红.SF_6断路器的状态监测与故障诊断.农村电气化.2007,(第237期),26-27、23页. * |
Also Published As
| Publication number | Publication date |
|---|---|
| CN112213634A (en) | 2021-01-12 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US10132853B2 (en) | Wide area fault detection method using PMU data | |
| CN111145517B (en) | Artificial intelligence electric line fire risk real-time early warning method and system | |
| CN107085153B (en) | Electricity abnormal fire early warning method and system | |
| CN116226766B (en) | High-voltage electrical apparatus running state monitoring system | |
| US9336491B2 (en) | Identification of power system events using fuzzy logic | |
| CN113779005B (en) | Defect evaluation method and device for primary equipment and storage medium | |
| CN112213634B (en) | Method and device for detecting running state of circuit breaker | |
| CN117349624A (en) | Electric power energy monitoring method, system, terminal equipment and storage medium | |
| CN114966472A (en) | Electric arc spectrum identification method and device | |
| CN111157045B (en) | Artificial intelligence electric line abnormal risk degree monitoring method and system | |
| CN115656683A (en) | Cable operation monitoring method, system, terminal equipment and storage medium | |
| CN117593848A (en) | Early warning protection system under high-voltage line | |
| CN115600879A (en) | Circuit breaker abnormity early warning method, system and related device | |
| CN118970818B (en) | Intelligent universal circuit breaker and control method | |
| CN118486153B (en) | Intelligent early warning method and system for fire safety management | |
| CN113721166A (en) | Dry-type full-sensing intelligent transformer device and management system thereof | |
| CN118884136A (en) | Intelligent cable fault monitoring and early warning method and system | |
| CN115980476A (en) | Transformer running state evaluation method and device based on short circuit impact | |
| CN117196251A (en) | Monitoring method, system, equipment and medium for park power distribution facility | |
| CN110609198A (en) | Operation and maintenance monitoring method for cable line and related equipment | |
| CN115877269B (en) | Intelligent bus-based power distribution early warning method, device, equipment and storage medium | |
| CN110568250A (en) | Overvoltage and mutual inductor fault monitoring method and device and related equipment | |
| CN214795612U (en) | Intelligent power consumption safety prevention and control management system | |
| CN116094147A (en) | Method and system for monitoring on-line state of distribution board | |
| CN112713651A (en) | Temporary electricity safety monitoring system and method |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |